Island of the Inner Hebrides which appears in Manx antiquarian writing through the medieval history and heraldry of the Kingdom of the Isles.

A paper published by the Manx Society in 1860 compared the heraldry of western Scottish families with that of Mann. Its author noted that the MacDonalds, described there as the earliest chiefs of Islay and early Lords of the Isles, did not quarter the Manx Three Legs with their own arms.

The paper used this absence, and the different heraldry of branches of the MacLeods, in an attempt to reconstruct relationships between the rulers of Mann and the western islands. It associated the period of common rule with the Scandinavian kingdom and with the conquest of Magnus Barefoot.

The same author contrasted Manx carved stones with stones in Iona and, more tentatively, Islay, on which the ship or lymphad appeared.

These arguments are nineteenth-century antiquarian interpretation rather than direct medieval evidence and should be read as such. The current evidence pack does not provide a sufficiently precise Manx-connected narrative of Islay's own political history to support a broader description.